[Tech1] What’s this for?

[Nick Ware]

Alan, here are two that I have. You’re welcome to them if they are any use to you. Both run fast on an AA batt. Thin one is 4mm diameter. That’s a cog on the fatter one, which may or may not fit yours. Pic taken on this iPad mini 6.
Cheers,
Nick.
[image0.jpeg]

Nick Ware - Sent from my iPad

On 23 Nov 2022, at 15:08, Nick Ware <waresound at msn.com> wrote:

 The yellow disc looks very familiar to me, but at the moment I’m not sure why!
I would hazard a guess that the motor is the buzzer that you would find in older mobile phones. It would have an eccentric weight to generate the vibration, and would be even smaller in an iPhone, etc. That’s unless they’ve invented a better way - I haven’t had a phone apart lately.
Cheers,
Nick.
Nick Ware - Sent from my iPad

On 23 Nov 2022, at 13:35, Alan Taylor via Tech1 <tech1 at tech-ops.co.uk> wrote:


I’ve got a project where I needed some tiny geared motors.  I bought a pack of miscellaneous gears and pulleys via eBay and they’re just what I need.  However I’m puzzled by one item.

Here’s a picture of a few gears, but what do you reckon the yellow disk with the slot is intended for?  There is a square recess either side of the middle section of the slot, but nothing seems to obviously fit it. The other side is smooth and the circumference is nicely rounded.

I’m not worried if it turns out to be a useless scrap of yellow plastic, but am curious about what it might have been intended to do.

When I say the motor is tiny, it’s 6mm diameter and 10mm long.

[image0.jpeg]


[image1.jpeg]


Alan
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